Internal combustion engine cylinder head variable swirl siamese

Details Internal combustion engine cylinder head variable swirl siamese Internal combustion engine cylinder head variable swirl siamese

1986-06-03

1987-10-13

Feinberg, Craig R.

Internal-combustion engines

Means to whirl fluid before, upon, or after entry into...

Having multiple oxidant inlet means

123432, 123188M, F02B 3100

Patent

active

046991042

ABSTRACT:
A variable swirl siamese type intake port structure for an internal combustion engine cylinder head includes a first generally straight intake passage which leads to a first intake port and a second generally helical intake passage which leads to a second intake port which is formed with a helical end vortex portion. A control valve is fitted in the first generally straight intake passage at an upstream portion thereof so as to control its flow resistance. A bypass passage opens from a point downstream of the control valve in the first generally straight intake passage to the helical end vortex portion of the second intake port. And a downstream portion of the bypass passage is communicated to a downstream portion of the second generally helical intake passage. Thereby the resistance to flow of air-fuel mixture of the generally helical intake passage is diminished, and the engine volumetric efficiency and the maximum attainable engine output power are increased.

REFERENCES:
patent: 3903849 (1975-09-01), List et al.
patent: 4457272 (1984-07-01), Koga
patent: 4550699 (1985-11-01), Okumura et al.
patent: 4586469 (1986-05-01), Okumura et al.

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